class Car():
    def __init__(self, make, model, year):
        self.make = make
        self.model = model
        self.year = year
        self.odometer_reading = 0

    def get_descripted_name(self):
        long_name = str(self.year) + ' ' + self.make + ' ' + self.model
        return long_name.title()

    def read_odometer(self):
        print("This car has " + str(self.odometer_reading) + " miles on it.")

    def update_odometer(self, mileage):
        if mileage > self.odometer_reading:
            self.odometer_reading = mileage
        else:
            print("You can't roll back an odometer!")

    def increment_odometer(self, miles):
        self.odometer_reading += miles


class Battery():
    def __init__(self, battery_size=70):
        """初始化电瓶的属性"""
        self.battery_size = battery_size

    def describe_battery(self):
        """打印一条描述电瓶的消息"""
        print("This car has a " + str(self.battery_size) + "-kWh battery.")

    def get_range(self):
        """打印一条里程，指出电池的续航历程"""
        if self.battery_size == 70:
            range = 240
        elif self.battery_size == 85:
            range = 270

        message = "This car can go approximately " + str(range)
        message += " miles on a full charge."
        print(message)


class ElectricCar(Car):
    """电动车的独特指出"""

    def __init__(self, make, model, year):
        """初始化父类的属性"""
        super().__init__(make, model, year)
        # self.battery_size = 70
        """初始化电池信息"""
        self.battery = Battery()

    # def describe_battery(self):
    #     print("This car has a " + str(self.battery_size) + "-kWh battery.")


# my_new_car = Car('aodi', 'A4', 2016)
# print(my_new_car.get_descripted_name())
# # 直接修改属性的值
# # my_new_car.odometer_reading = 22
# my_new_car.update_odometer(33)
# my_new_car.read_odometer()
#
# print("----初始化子类-----")
# my_tesla = ElectricCar("tesla", 'model s', 2016)
#
# print(my_tesla.get_descripted_name())
# my_tesla.battery.describe_battery()
# my_tesla.battery.get_range()
